External surface configuration for the front panel of a microwave oven



FIG. 1 is a front perspective view of an external surface configuration for the front panel of a microwave oven, showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a left side elevation view thereof; and,

FIG. 6 is a right side elevation view thereof.

The details shown in broken lines in FIGS. 1-3, 5 and 6, and the undisclosed rear view form no part of the claimed design. 

The ornamental design for the external surface configuration for the front panel of a microwave oven, as shown and described. 